Place any object or transparency on the Sunography paper, expose it in bright sunlight, and rinse to reveal a rich blue print. Unlike like other sun print kits, Sunography is light sensitive on both sides, to make two sided prints. Sunography products are also made with superior materials. Sunography Paper is beautiful 5 x 7 in. sheets of 100% cotton white archival watercolor paper. Produce finely detailed prints that are suitable for tinting or hand coloring with any media. Use old photo negatives, x-rays, bits of lace, leaves, everyday objects or printed transparencies to make designs. A forerunner to the modern photographic process, sunlight sensitive paper was first invented in 1842 and subsequently popularized by artist Anna Atkin, one of the first female photographers. Measures 5 x 7 in.